Printing telegraph apparatus



Feb. 17, 1942, c. w. BURCKY 2,273,018

PRINTING TELEGRAPH APPARATUS Filed July 13, 19 40 2 Shee ts-Sheet l 2524lv 7 I 70 i f I Z I l W 8 INVENTOR. W CHARLES w. BURCKY ATTORNE'i.

Feb. 17, 1942. Y I c. w. BURCKY 8 PRINTING TELEGRAPH APPARATUS FiledJuly 13, 1940 2 Sheets-Sheet 2 FIG. 4 I v INVENTOR. CHARLES W. BURCKYPatented Feb. 17, 1942 ram'rmc TELEGRAPH arrm'rus Charles w. Burcky,Chicago, m., assignor to rem-n A, type Corporation, Chicago, 111., acorporation of Delaware Application July 13, 1940, Serial No. 345,258

7 Claims.

This invention pertains to printing telegraph apparatus and moreparticularly to automatic paper feeding mechanisms therefor.

The primary object of this invention is to provide in a line feedingmechanism of a printing telegraph receiver responsive to codecombinations of signal impulses, a means efiective only between linefeed movements of the record material for controlling the multiple linefeed operations incident to vertical tabulation.

A feature of the invention resides in providing a sensing means which isoperative upon a standard line feeding mechanism of a page printer,

wherein the control perforation in the page material is sensed onlyduring the period between successive line feeding operations,thereby'avoiding the necessity of dragging the page sensing elementsupon the page material.

When using record material comprising a series of blank forms of thesame standard length and having preprinted headings, it is desirable toprovide in page printers, mechanism for exercising control over theproper feeding of the forms into printing position. The messages on eachform, of course, may contain different numbers of recorded lines, andaccordingly, before the first line of the next message may be printed,an additional feed must be imparted to the preceding message in order tobring the next form into proper printing position. This additional feedmust be of such a length for each message, that .forms of standardlength will be obtained for said various length messages. Moreover, theadditional feed is a complementary additional one since it completes thefixed number of line feeds per preprinted form. Specifically, thepresent invention is disclosed as embodied in a telegraph printer of thetype shown in U. S. Patent 1,904,164, and for achieving the object ofthe invention, a special signal, which will be identified herein as thevertical tabulator signal, controls the selection of a special functionlever, which, when operated in response thereto, actuates a multi-armedlever, which in turn sets upfour conditions; namely first, a contact inthe operating circuit for the start magnet of the transmittingdistributor is opened to suspend transmission during verticaltabulation"; second, the multi-armed lever is latched in its actuatedposition which condition is maintained during vertical tabulation;third, the line feed push bar is held in the path of the function bail;and fourth, the stop gate of the selecting unit is held released topermit continuous rotation of the selector cam assembly during "verticaltabulation."

While these four conditions are maintained, a succession of line feedoperations is performed, and during each rest period between line feedoperations, a feeler lever is operated to sense the record material tofind the control perforation therein. When the control perforation isfound, the feeler or stabber drops therein, thus causing, throughsuitable linkage, the unlatching of the multi-armed lever which in turnpermits the contact in the operating circuit of the transmittingdistributor start magnet to close, to again start transmission, removethe line feed push bar from the path of the function bail, and restorethe stop gate to its stop position.

The foregoing and other objects and features of the invention will beapparent from the following description when taken in conjunction withthe accompanying drawings, wherein like reference characters designatesimilar parts throughout the several views, and in which Fig. 1 is aperspective view of a mechanism according to the present invention, witha sche- -matic diagram of a transmitter control circuit,

only so much of the printing telegraph apparatus being shown as isnecessary to an understanding of the invention; A

Fig. 2 is a fragmentary view showing the relation between the selectormechanism and the automatic paper feeding mechanism according to thepresent invention;

Fig. 3 is a plan view of the record material used in carrying out thepresent invention;

Fig. 3A is an enlarged fragmental view of the record material showingthe control hole;

Fig. 4 is a transverse cross-sectional view of the platen showing thepaper sensing mechamsm;

Fig. 5 is a fragmentary elevational view of the platen showing the papersensing arrangement; and

Fig. 6 is a perspective view of a modified form of paper sensing means.

Some of the novel features shown but not claimed herein are shown andclaimed in the copending applications of Albert H. Reiber, Serial No.345,259 and of Raymond E. Zenner, Serial No. 345,257, both filed July13, 1940.

Having reference particularly to Figs. 1 and 2. the mechanism accordingto the present invention is shown as embodied in a telegraph printingmachine of the type disclosed in U. S. Patent No. 1,904,164, to whichreference may be had for a detailed description of the printer elements.The selector mechanism is of the single magnet type and comprises aselector magnet ll (Fig. 2)

the pivot stud i4. A spring l3 has one of its ends secured to armaturei2 and its other end secured to an adjusting screw i3. Normally themagneti l is energized and holds the armature i2 attracted, against thepull of spring l5. The,

free end of lever I3 is provided with a pair of laterally extending armsor abutments l1 and II,

which co-operate with laterally projecting arms l3 and 2| on the rearends of selector fingers or swords 22 to position the latter in theirclockwise or counterclockwise position, as will presently appear.

Power for operating the selecting mechanism is supplied by a motor (not.shown) to main shaft 23 (Fig. 1) of the printer. Mounted near one endof shaft 23 is a selector cam barrel 24, which is frictionally connectedto shaft 23 by means of suitable clutch members. The cam barrel 24 isprovided with a helically arranged series of cams 25, one for eachelement of the permutation-code. The series of cams 25 cooperate with acorresponding series of bell crank levers'23, pivoted on a common shaft21 and normally biased clockwise (Fig. 2) by individual springs 23.Intermediate the arms l3 and 2| of swords 22 is a circular portion 23adapted to I 24 isrotated. In addition to this reciprocative Z movement,swords 22 have an oscillatory movement about circular portion 23depending upon v the co-operative relationshipbetween abutting elementsl1 and I3, and 3 and 2|. A friction holding means (not shown) isprovided to hold the swords 22 in the position to which they have beenset. The springs 23 associated with bell crank levers 23 normally holdthe swords 22 in their forward (rightward as viewed in Fig. 2) positionand in engagement with a corresponding series of .T-levers 3| pivoted at32. -Levers 3| are articulated to selector vanes 33, and rock said vanesto their-clockwise or counterclockwise positions depending upon whetherthe swords strike them above or below the pivot shaft 32.

Selector lever l3v is also providedwith an arm 34 terminating in aneccentrically headed ad- Justment screw 35, the function of which is toinitiate, through a series of levers, the rotation of the selector cambarr'el 24 in the following manner. Having reference to Fig.2, it isobserved that the head of screw 35 strikes against a plunger 33 slidablycarried in a support 31 to actuate a trip member in the form of a smallbell crank lever33 pivotally mounted on shaft 33 so that its oppositearm may engage one arm of a latch 4| pivoted at 42 in a support 43 (Fig.1). The extremity of the vertical arm of the bell crank 33 engages thelatch 4| at a point coincident with the axial center of-shaft 23 and ofa pivot stud 44 which is employed for orientation purposes, as fully setforth in said afore- I related to the cam barrel 24. Cam barrel 24 andstop disc 32 constantly tend to rotate (clockwise as viewed in Fig. 2)due to the frictional connection with constantly rotating shaft 23.Thus, stop disc 52, through its arm 3|, tends to rotate stop gate 43 ina counterclockwise direction against the action of spring 33, but thismovement is resisted by a shoulder 34 on latch 4|. However, upon thereceipt of a start or spacing signal impulse which is equivalent to anopen line condition, the magnet ii is de-energized and the selector armor lever I3 is rotated clockwise (Fig. 2) under the action of spring l5.This causes the head of screw 35 to be actuated downwardly (as viewed inFig. 2) to push plunger 33 correspondingly, thus imparting clockwise(Fig. 1) movement to bell crank 33, which causes latch 4| to rotate in acounterclockwise direction against the action of compression spring 43sumciently to withdraw shoulder 54 from co-operative engagement with arm45. Stop gate 43 is free to respond to the greater pressure imposed uponit by stop arm 5| wich overcomes spring 53. Stop gate 43 is thus rotatedby arm 5| until arm 49 has become disengaged from arm 3|, whereupon arm5| and hence cam drum 24 continue to rotate during the ensuing cyclicperiod, and stop gate 43 is returned to its clockwise position (asviewed in Fig. 2) by spring 53. However, there is a slight overtravel ofthe stop gate 43 in its return movement, so that arm 43 will be movedclockwise sumciently to permit theengagement of shoulders 34 and arm 43.

Upon receipt of acode combination of signal impulses, the start impulseserves to release armature l2, whereupon screw head 35 presses plunger33 to effect, through levers 33 and 4|, the

removal of shoulder 54 from arm 45 so that arm 5| overcomes stop gate 43counterclockwise and the rotation of cam drum 24 is initiated. Duringthe ensuing single revolution of cam drum 24 the cam portions 25 thereonact sequentially on levers 23 to draw swords 22 leftwardly (as viewed inFig. 2) so that abutments l3 and 2| thrust against arm I! or l3,respectively, depending on whether lever I3 is in attracted or releasedposition in response to the marking or spacing signal impulses,respectively, in the code signal. Swords 22 under the action of springs23 act upon levers 3| to set the selector vanes 33 corresponding to thecode signal received by the selector magnet Associated with selectorvanes 33 are a plurality of function levers, one of whichis the verticaltabulator" function lever 55. The function levers are pivotally mountedon a common shaft 53 and are provided with individual springs 51 whichact upon selection to rotate said function levers clockwise (as viewedin Figs. 1 and 2) into cooperation with selector vanes 33. The functionlevers are held in their counterclockwise position by a rod 59 of afunction lever bail, whose operation is controlled by the printing ball,as fully described in the aforementioned patent.

Function lever 53 is provided with a leftwardly extending arm 3|carrying at its extremity an adjustable striker screw 32 whichco-operates with one arm 33 of a plural armed lever 34 pivoted on shaft33. Lever 34 is provided with an arm 35 which extends underneath theline feed push bar 33 (Fig. 1), and also a vertical arm 31 whichterminates in a laterally disposed portion adapted to engage with alatch member 33 pivoted I on rod II. Also pivoted on rod II is aU-shaped lever member I2 provided with a depending arm 1 l3 and ahorizontal arm 14. At the extremity of arm I3 there is pivoted the linefeed push rod 88 which is provided at its free end with a shoulder Iadapt-ed to co-operate with the function ball blade 18, as described inthe aforementioned patent. Arm I4 of lever I2 has pivotally securedthereto one end of a line feed link 11, the other end of which ispivoted to the horizontal arm of a line feed bell crank lever I8,pivoted at I9. At the end of the vertical arm of the bell crank lever 18is pivotally carried a line feed pawl 8I which co-operates with linefeed ratchet wheel 82 secured to a cylindrical platen 83.

Multi-armed lever 64 has also an arm 84 which performs the dual purposeof controlling the vertical tabulation operation (multiple line feed)through the stop-gate latch M (as will presently appear) and of openingthe operating circuit of the start magnet of the transmittingdistributor to suspend transmission during tabulation. Having referenceto Fig. 1, the extremity of arm 84 of lever 84 overlies spring 85 of anormally closed contact 88, which is included in a circuit forenergizing a stop magnet 60 of a transmitter distributor, indicatedgenerally by a dotted square I0, the transmitting contacts 80 of whichare connected in a line wire 90 including the selector magnet II. Whereoperating conditions are encountered such that the speeds of the motorsare determined by governors, and the governed motors of the printers inthe circuit run at slightly different speeds, a time delay relay I8I maybe introduced in the circuit for magnet 80, the purpose of which is todelay the resumption of transmission until the slowest printer in thecircuit has completed vertical tabulation. The circuit for the stopmagnet 80 extends from ground, through switch I80, relay 80, contact 88and a contact I82 of relay I8I to battery. The circuit for relay I8Iextends from battery, through relay I 8|, then through contact I83 toground. During normal operation of printing, the switch I80 and contact88 are closed, and the magnet 80 is energized, thus holding stop pawlI84 out of the path of the transmitting distributor brush arm I85.During vertical tabulation the contact 88 will be held open by arm 84,

and the contact I83 will be held closed. The

opening of contact 88 causes the stop magnet 80 to become de-energizedimmediately. The closing of contact I83 completes the energizing circuitfor the slow release relay I8I, thus opening contact I82. Now, aftercompletion of vertical tabulation, the contact I83 will be opened andthe contact 88 will again be closed. However, the energizing circuit forstart magnet 60 will not be completed until after the slow release relayI 8I has become de-energized. thus delaying the closure of contact I82and the energization of magnet 80 to resume transmission until theslowest printer in the line has finished the vertical tabulationoperation. Arm 84 overlies an arm 81 of a bell crank lever 88 pivoted at89, the depending arm 9I of which is pivoted to a link 92. Link 92 isconnected to depending porticn 93 of a member 94 slidably carried on arod 95. Member 95 is provided with an arm 98 which c-o-operates with thedepending arm of bell crank lever 38 to effect under predeterminedoperating conditions the rocking of latch lever M to release the stopgate member 48 to permit the rotation of the stop disc 52, and hence camdrum 24.

Latch member 88 has fixed thereto a stud 81 which fits into the lowerforked end of a bar 98, the upper end of which is pivoted at 99 to theextremity of a lever I (H clamped to a pivot rod I02 carried by theprinter frame. Fixed to link I1 is a member I03 having a laterallyextending portion I04 positioned adjacent the lower side of lever Im soas to impart rocking motion to lever IOI in response to thereciprocating movement of link 11 during the line feeding operations. Alever I05 is fixed to shaft I02 at the end opposite to lever IOI and isprovided with arms I08, I81 and I08. To the extremity of arm I08 isattached one end of a spring I09, the other end of which is attachedto-a spring post II I carried on the side frame II2 of the platencarriage. Arm I08 of lever I05 carries at its extremity a stud II3 whichacts upon an arm II4 of a multi-armed lever II5 (as will presentlyappear) to rotate lever II5 clockwise about its pivot II8. Arm I01 oflever I05 is provided at its extremity with a lateraly. directed portionwhich co-operates with an arm II! of lever II5. Lever II5 has also anarm II8 conformed at its extremity with a sensing portion or feeler II9(Figs. 1, 3 and 4), the function of which is to sense or search for acontrol perforation in the record material or printed form. The feelerH9 is receivable in a groove I2I in the platen 83 to provide clearancefor the movement of the feeler I I8 when a control perforation is found.

A guide member I22 is associated with a feeler II9 to facilitate thepassage of the record material between said feeler and the platen 83.Guide I 22 is provided with a notch or opening I 23 to guide the feelerH9, and is integrally united with a lever arm I24 freely mounted onpivot II8. Lever I24 is normally biased counterclockwise by a spring I25to press the guide I22 against the platen 83.

Lever II5 has also an arm I28 which terminates in a shoulder I21 whichengages a latch arm I28 fixed to a rock shaft I29 to which a normaltendency to rotate in a counterclockwise direction is imparted by aspring I3I. Lever I I5 is normally biased in a counterclockwisedirection by a spring I32 extending between a spring post secured to armI28 and a spring post mounted on frame II2. Fixed to rock shaft I29 andin operative alignment with line feed -be1l crank lever I8 is an armI33.

An arm I34 is freely mounted on rock shaft I29 adjacent the latch armI28 and is pivotally artculated to one end of a link I35, the other endof which is pivoted to arm II8 of lever II5. A stud I36 is secured tolink I and overlies to arm I24 and acts, when link I35 is moveddownwardly, to rotate arm I24 clockwise against the tension of springI25 moving guide I22 away from the platen 83 to facilitate the placingof record material in the printing ap aratus preparatory to printing.Simultaneously, link I35 in its downward movement and due to its pivotalarticularion with arm II8, rotates le rer II5 so as to bring feeler II9cut of c ntact-with the record material as it is inserted between theplaten and the guide I22. This downward movement of link I35 tofacilitate the inserti n of a new supply of record material iscontrolled by a cam portion I31 integral with a pressure roller leverI38 pivoted at I 39 to the platen carriage frame II2. Lever I38 isnermally spring biased by a spring (not shown) to hold pressure rollerI4I against platen 83. When lever I38 is rotated to the dotted lineposition I 42, the cam portion I31 acts upon arm I34 .to depress linkI35, thereby causing the levers II5 and I24 -to rotate clockwise to moveguide I22 and feeler II6 away from platen 63 simultaneously.

General operation The normal condition of the signal line is marking andhence the selector magnet II is energized and the armature I2 is heldattracted. Upon receipt of the start impulse of a code combination theselector magnet is deenergized and lever I3 upon being actuatedclockwise by spring I5 causes screw head 35 to act through plunger 36and levers 36 and H to release stop gate 46 to permit rotation of stopdisc 52 and hence cam barrel 24, to effect, through levers 26, swords 22and T-levers 3|, the setting of vanes 33 in accordance with the receivedcode signal. At a predetermined instant in the cycle of rotation of camdrum 24, a cam 25 thereon operates a clutch release mechanism (notshown) on the main operating shaft 23 to initiate rotation ofv anoperating cam assembly (not shown) a cam on which controls, through theprinting bail, the operation of a function lever bail identified in Fig.2 by the rod 56 for controlling the function levers, and another cam onwhich controls,

through the function ball, a bail blade I6 for operating the functionpush bars; for example, line feed push bar 66.

Upon receipt of a tabulator signal (for vertical tabulation or multipleline feed) the vanes 33 are set characteristically in the mannerdescribed, and upon operation of the function lever bail 56 the verticaltabulator function lever 55 will be selected and rotated about pivot rod56 by spring 51 to raise arm 6I whereby, through screw 62, multi-armedlever 64 is rocked counterclockwise to become latched by the springbiased latch arm 66. Ann 65 of lever 64 raises line feed push bar 66 tobring the shoulder I5 thereof into the path of function bail blade I6preparatory to performing a series of line feed operations ashereinafter set forth. Arm 64 of lever 64 performs two functions;namely, the end thereof acts on contact spring 65 to open contact 66 inthe operating circuit for the start magnet of the transmittingdistributor (assuming switch I66 to have been previously closed) tosuspend transmission during vertical tabulation; and also, clockwisemovement is imparted to bell crank 66 to cause link 62 and slidablemember 64 to move leftwardly (Fig. 1), thereby causing arm 66 to rocklatch lever H to unlatch stop gate 46 to permit disc 52 and cam drum 24to rotate. Since member 64 is held in its leftward position as long asthe plural armed lever 64 is condition of the signal line is marking,the line magnet II will be energized, and during subsequent rotations ofcam drum 24 the letters" or unshift combination, which is an all-markingcode'combination, will be set up, in response to which the unshiftfunction lever wll be selected, which is a nonprlnting and nonspaclngfunction and which has no effect upon vertical tabulation. Thus, only asingle operation of the vertical tabulator functionlever in response tothe vertical tabulator code signal is assured.

The record material employed in connection with the present inventionconstitutes preferably (though not necessarily) sprocket feed paper, asindicated in Fig. 3, comprising a series of blank forms I44 of the samestandard length, which may have preprinted headings. To govern thefeeding of the forms into proper printing position following thecompletion of the message recorded on the preceding form, a control holeor perforation I45 (Fig. 3) .is pr'ovided in each form I44. The hole I45is so positioned on the form I44 so as to coincide with the sensingportion II6 when the first line of printing is at the printing point. Aspreviously indicated, the messages on each form I44 may containdifferent numbers of printed lines, and accordingly, before the firstline of the next message may be printed, an adidtional feed must beimparted to the preceding message. This additional feed is initiated bythe selection of the "vertical tabulator" function lever in response tothe vertical tabulator code signal, as just described, and continues inresponse to repeated line-feed operations until the control hole I45 issensed by the feeler II3. It is, of course, obvious that more than onecontrol hole I45 may be provided in each form, if desired.

A particular-feature of the present invention resides in sensing orfeeling for the control perforation during the rest period betweensuccessive line feed movements. In other words, regarding the line feedmechanism as an intermittently operable means, the sensing means iseffective during the intermittences to effectuate the control exercisedby the control perforation in the record material. With thisarrangement,

latched up by latch 66, stop gate 46 will remain unlatched and cam drum2.4 will rotate continuously. This constant rotation of cam drum 24will, through its aforementioned control over the clutch releasemechanism for the main operating cam assembly (not shown), cause thefunction bail comprising the function bail blade I6 to be operatedrepeatedly. Push bar 66, being .held in the path of function bail bladeI6, will also be operated repeatedly, and through levers I2, link 1'I,bell crank lever I6, pawl 6I and ratchet wheel 62, will cause platen 63to be linefed successively. By this means and through the co-operationof sprocket feedi pins I43 and pressure roller I4I, the sprocket feedpaper, as illustrated in Fig. 3 is fed through the printer. It isimportant in this connection to point out that the function lever 55responds only once to the dragging of the sensing element upon therecord material is avoided.

Line feed of the platen 63 is effected in the direction of the arrow(Fig. 1) upon each downward movement of the link II.- As bell cranklever I6 is actuated counterclockwise, pawl 6I operates ratchet wheel 62in the usual manner to effect a line feed of one step, and the verticalarm of lever I6 strikes the depending arm I33 to impart clockwisemovement to rock shaft I26, thereby lifting latch arm I26 out oflatching engagement with arm I26 of plural armed lever II5. Spring I 32will then urge lever II5 counterclockwise to bring feeler I I9 intocontact with the underside of the paper I44. The movements of theelements are so timed that the feeler II6 will touch or sense the paperI44 during the rest period between successive line feed operations. Ifno hole I45 is positioned opposite feeler II9, only a limited rotationof lever II5 will result, and arm I" thereof will still block arm I61,thus preventing shaft I62 from rotating clockwise sufficiently to cause,through arm I ill, the bar 66 from unlatching arm 68 from arm 61 ofplural armed lever 64 to stop "vertical tabulation."

When the line feed link 11 is returned to its upward position, lug I64acts, through arm IOI, to impart counterclockwise movement to shaft I02,to impart like movement to lever I05, so that stud H3 or arm I08 thereofacts on arm II4 to return lever I I5 to its clockwise position, therebypermitting arm I26 to become again latched by latch arm I28.

If, when lever I I5 is unlatched in response to-a line feed operation,the feeler II9 senses a control perforation I 45 and passestherethrough, lever I I5 is caused to rotate counterclockwise a greateramount than otherwise to remove arm I I1 out of blocking relation witharm I01, whereupon spring I [I9 is enabled to rotate lever I65, andhence shaft I02 a sufficient amount to depress bar 98 and latch arm 68an extent great enough to unlatch arm 61 of plural armed lever 64. Uponbeing thus unlatched, lever 64 returns to the position shown in Fig. 2,to restore contact 86 to its closed condition, thus resumingtransmission, to drop push bar 66 out of the path of function bail blade16, and to permit bell crank lever 88 to return to its counterclockwiseposition to free latch lever 4I, so that the latter responds to itsspring 48 to latch the stop gate 46 against movement, thereby preventingfurther rotation of cam drum 24. The vertical tabulating mechanismaccording to the present invention is thus restored to its unoperatedcondition in readiness for a subsequent vertical tabulating signal. Inthe embodiment of the invention just described, the amount of movementof arm I61 (when unblocked) to effect the unlatching of arm 68 isindependent of the degree of movement of sensing arm II9, thusincreasing materially the margin of operation of the vertical tabulator.

Modification A modified form of page sensing mechanism is shown in Fig.6 and contemplates the sensing of the control hole in the recordmaterial farther from the printing point and does not require groovingthe platen for the feeler or stabber. In this form of the invention aline feed link I 5| (comparable to link 11, Fig. l) is piv- 'oted to onearm of a line feed bell crank lever I52, to the vertical arm of which ispivoted a pawl I53 which co-operates with a ratchet wheel I54 fixed tothe platen I55. A bar I56 (comparable to bar 98, Fig. 1) controls alatch similar to latch 68 of the principal embodiment of the invention,and is pivoted to an arm I51 fixed to one end of a rock shaft I58, tothe other end of which is secured a sensing lever I59 carrying at itsouter extremity a feeler portion I6I Lever I59 is provided with anupstanding hook portion I62 which is engageable with a latch arm I63pivoted at I64 to the platen carriage side frame I65. Lever I 59 is alsoprovided with a projection I66 to the end of which is fastened one endof a spring I61, the other end of which is attached to the latch armI63. Spring I61 thus acts to bias lever I59 clockwise and to urge latchI63 clockwise into latching relation with hook portion I 62. Latch armI63 is provided with a projection I68 which co-operates with an arm I69fixed to a rock shaft I1I. curely on shaft HI and positioned inco-operative relation with line feed bell crank I52 is a depending armI12. A spring I13 attached to arm I69 tends to rotate shaft I1I normallyin a counterclockwise direction. Fixed to shaft I58 is an arm I whichengages lever I52.

Also carried se- The record material I14 of the form shown in Fig. 3 isfed between an apron or plate I15 and a guide plate I16. At a pointcoincident with feeler I6I, plates I15 and I16 are perforated to permitthe passage of said feeler therethrough when a control perforationsimilar to perforation I45 (Fig.3) is found. The record material isdirected around the platen I55, and engages the sprocket pins I11 in theusual manner.

Line feed of the platen I65 is achieved in the direction of the arrow(Fig. 6) upon each downward movement of link I6I. As line feed lever I52is operatedcounterclockwise,- pawl I53 acts upon ratchet wheel I54 inthe usual manner to effect a line feed of one step, and the vertical armof lever I 52 strikes the depending arm I12 to impart clockwise movementto rock shaft I1I, thereby, through arm I69, swinging latch arm I63 outof latching engagement with sensing lever I59. Spring I61 will then urgelever I59 clockwise to bring feeler I6I into contact with the topside ofthe paper I14. If no hole I45 is positioned opposite feeler I6I, only alimited rotation of lever I59 will occur and arm I51 will be preventedfrom rotating sufiiciently to cause, through bar I56, the unlatching ofthe plural armed lever similar to lever 64 (Figs. 1 and 2).

When the line feed link I5I is returned to its upper position, the leverI52 acts, through arm I10, to impart counterclockwise movement to shaftI58, to impart like movement to lever I59 thereby permitting lever I59to become latched again by latch arm I63. II, when lever I59 isunlatched in response to a line feed operation, the feeler I6I senses orfinds a control perforation I45 and passes therethrough, lever I59 iscaused to rotate clockwise a greater amount than previously, under theinfluence of spring I61, whereby shaft amount to depress bar I56 anextent great enough to unlatch arm 61 (for example) of multi-armed lever64 (Fig. 1), the efi'ect of which is as described in connection with theprincipal embodiment of the invention.

It is understood that the invention is not limited to the specific formsherein described, but embraces all forms which come within the scope ofequivalency of the appended claims.

What is claimed is:

1. In a printing telegraph apparatus, mechanism for feeding a recordstrip intermittently, means for initiating operation of said feedingmechanism, means controlled solely by a single designation in the recordstrip for interrupting operation of said feeding mechanism at a pointdetermined by the location of said designation in the record strip, andsensing means effective during the intermittences to effectuate saidcontrol.

2. In a printing telegraph apparatus, means responsive to codecombinations of selecting conditions, rotary selecting elementscontrolled by said means, means effective under certain conditions toarrest said rotary means, mechanism for feeding a record stripintermittently, means controlled by said rotary selecting elements forinitiating operation of said feeding mechanism, means controlled by saidlast recited means and effective upon said second recited means toeffect repeated operation of said feeding mechanism, means governedsolely by a single designation'in the record strip for interruptingoperation of said feeding mechanism at a point determined by thelocation of said designation in the record I58 is likewise rotated asunicient 3. In a printing telegraph apparatus, means responsive to codecombinations of selectingconditions, rotary selecting elementscontrolled by said means, a stop gate effective under certain conditionsto arrest said rotary means, sensing mechanism, mechanism for advancingrecord material intermittently past said sensing mechanism, meansassociated with said advancing mechanism to render said sensingmechanism effective during said intermittances, means controlled by saidrotary selecting elements and effective upon said stop gate to effectconsecutive intermittent operations of said advancing mechanism, andmeans governed solely by a single designation in the record material forinterrupting operation of said advancing mechanism at a point determinedby the location of said designation in the record material.

4. In a printing telegraph apparatus, means responsive to codecombinations of selecting conditions, rotary selecting elementscontrolled by said means, a stop gate effective under certain conditionsto arrest said rotary means, sensing mechanism, mechanism for advancingrecord material step-by-step past said sensing mechanism, meansassociated with said advancing mechanism to render said sensingmechanism effective during the rest periods between successive advancingoperations, means controlled by said rotary selecting elements andeffective upon said stop gate to eflect consecutive step-by-stepoperations of said advancing mechanism, and means governed solely by asingle designation in the record material for interrupting operation ofsaid advancing mechanism at a point determined by the location of saiddesignation in the record material.

5. In a printing telegraph apparatus, a primary selecting mechanism, asecondary selecting mechanism controlled by said primary selectingmechanism, rotary selecting elements controlled by said primaryselecting mechanism, a stop gate effective under certain conditions toarrest said rotary selecting elements, sensing mechanism, mechanism foradvancing record material intermittently past said sensing. mechanism,means aaraora associated with said advancing -mechanlsm to render saidsensing mechanism effective during saidv intermittences, a functionlever controlled by said secondary selecting mechanism, a pluralfunctionary instrumentality controlled by said function lever, saidinstrumentality comprising a latchable element, an element forcontrolling'the' consecutive operations of said advancing means, and athird element for performing the dual fuction of suspending transmissionand initiating operation 01 said advancing mechanism, means controlledby said instrumentality and effective upon said stop gate to effectconsecutive operations of said advancing mechanism, and means governedsolely by a single designation in the record material for interruptingoperation of said advancing mechanism at a point determined by thelocation of said designation in the record material.

6. In a printing telegraph apparatus, mechanism for advancing a recordstrip intermittently, means for initiating operation of said feedingmechanism, all-mechanical means controlled solely by a singledesignation in the record strip for interrupting operation of saidadvancing mechanism at a point determined by the location of saiddesignation in the record strip, and feeler mechanism effective duringthe intermittences to effectuate said control.

7. In a printing telegraph apparatus. means responsive to codecombinationsof selecting conditions, rotary selecting elementscontrolled by said means, a stop gate effective under certain conditionsto arrest said rotary means, sensingmechanism, mechanism for advancingrecord material intermittently past said sensing mechanism, meansassociated with said advancing mechanism to render said sensingmechanism effective during said intermittences, mean controlled by saidrotary selecting elements and effective upon said stop gate to effectconsecutive intermittent operations of said advancing mechanism, andall-mechanical means governed solely by a single designation in therecord material for interrupting operation of said advancing mechanismat a point determined by the location of said designation in the recordmaterial.

CHARLES W. BURCKY.

